Al3+ Impacting on Eu3+ - Host Energy Transfer and Calculation of Eu3+ 5D0 Quantum Efficiency

Abstract

Through XRD, DTA-TG, SEM and photoluminescent analysis, its morphology, crystal structure and luminescent property were discussed and it is found that one type of excellent phosohr can be obtained, and its luminescent efficiency and particles sizes can be improved to some extent by adjusting suitable technological conditions. According to the photolumiescent characteristics of the phosphor, its emission mechanism was mentioned. The partial J-O parameters and quantum efficiency of Eu3+ 5D0 energy level were calculated under 395 nm excitation. The phosphor can combine with 390-410 nm InGaN chip in order to get different simple color light and white light. Under 20 mA forward-bias current, bright red light is observed by naked eyes so the phosphor will have excellent application outline from the LED illumination and display in the further.